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FireSync API
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Helper class to support the implementation of a RAM page cache for a flash storage device.
At present, this class provides features to support a read cache. Additional support (e.g., dirty flags, eviction callbacks) would be required to support a writable cache.
Public Member Functions | |
| kStatus | kPageCache_AccessPage (kPageCache cache, kSize pageIndex, kPageCacheItem *page) |
| Finds the cache page associated with the specified page index (if present) and updates LRU information for the page. More... | |
| kStatus | kPageCache_AllocatePage (kPageCache cache, kSize pageIndex, kPageCacheItem *page) |
| Adds a page associated with the specified page index to the page cache. More... | |
| kStatus | kPageCache_Construct (kPageCache *cache, kSize pageCapacity, kSize pageSize, kSize spareSize, kAlloc allocator) |
| Constructs a kPageCache object. More... | |
| kStatus | kPageCache_CopyFromPageData (kPageCache cache, kPageCacheItem page, kPointer dest, kSize length) |
| Copies page data out of a cache page. More... | |
| kStatus | kPageCache_CopyFromPageSpare (kPageCache cache, kPageCacheItem page, kPointer dest, kSize length) |
| Copies spare data out of a cache page spare area. More... | |
| kStatus | kPageCache_CopyToPageData (kPageCache cache, kPageCacheItem page, const kPointer source, kSize length) |
| Copies page data into a cache page. More... | |
| kStatus | kPageCache_CopyToPageSpare (kPageCache cache, kPageCacheItem page, const kPointer source, kSize length) |
| Copies spare data into a cache page spare area. More... | |
| kStatus | kPageCache_FindPage (kPageCache cache, kSize pageIndex, kPageCacheItem *page) |
| Finds the cache page associated with the specified page index, if present. More... | |
| kStatus | kPageCache_Invalidate (kPageCache cache) |
| Invalidates the entire page cache. More... | |
| kStatus | kPageCache_InvalidatePage (kPageCache cache, kSize pageIndex) |
| Invalidates a specific page. More... | |
| kStatus | kPageCache_InvalidateRange (kPageCache cache, kSize pageIndex, kSize pageCount) |
| Invalidates a ranges of pages. More... | |
| kPointer | kPageCache_PageData (kPageCache cache, kPageCacheItem page) |
| Returns a pointer to a cache page data buffer. More... | |
| kSize | kPageCache_PageSize (kPageCache cache) |
| Reports the page size for the cache. More... | |
| kPointer | kPageCache_PageSpare (kPageCache cache, kPageCacheItem page) |
| Returns a pointer to a cache spare data buffer. More... | |
| kSize | kPageCache_SpareSize (kPageCache cache) |
| Reports the spare size for the cache. More... | |
Related | |
| kPointer | kPageCacheItem |
| Represents an entry within a kPageCache object. | |
